Deicing device for high-speed electrical railway contact line

Abstract

The utility model relates to the field of contact line deicing, and discloses a deicing device for a high-speed electrical railway contact line, which comprises a deicing sleeve which is arranged along the length direction of the contact line and wraps the upper surface of the contact line, the outermost layer of the deicing sleeve is an insulating layer, and a conductive wire for heating is arranged in an inner cavity of the deicing sleeve. Two ends of the conductor wire are respectively connected with an external power supply; a plurality of positioning wire clamps are evenly arranged on the deicing sleeve in the length direction of the deicing sleeve, and the deicing sleeve and the contact wire are stably connected through the positioning wire clamps. According to the utility model, the deicing sleeve for providing a heat source is arranged on the contact line, so that the overhead line system is prevented from icing, and the overhead line system has the beneficial effects of convenience in use, strong practicability, high safety, good anti-icing and deicing effects and easiness in monitoring.

Description

Technical Field

[0001] The utility model relates to the field of contact line deicing, in particular to a deicing device for a high-speed electric railway contact line. Background Art

[0002] At present, the contact wires of high-speed electrified railways are running outdoors and are easily affected by the environment. In particular, in some areas, the contact wires will freeze in low-temperature weather such as snow and rain in winter. When electric locomotives pass by, the carbon slides on the pantographs will rub against the ice on the contact wires, causing arcing, which will cause locomotive failures and seriously affect the safe operation of the locomotives. Therefore, it is urgent to solve the problem of "icing" of contact wires in high-altitude and low-temperature areas to prevent and remove ice. Utility Model Content

[0003] In order to overcome the problem in the above background technology that the contact line is frozen, causing arcing when the electric locomotive passes by, thereby causing the locomotive to fail to operate, the utility model provides a deicing device for the contact line of a high-speed electric railway, and a deicing sleeve that provides a heat source is arranged on the contact line to effectively prevent the contact line from icing. The utility model has the beneficial effects of convenient use, strong practicality, high safety, good anti-icing and deicing effect, and easy monitoring.

[0004] The technical solution of the utility model is as follows:

[0005] A deicing device for a high-speed electric railway contact line comprises a deicing sleeve arranged along the length direction of the contact line and wrapped on the upper surface of the contact line, the outermost layer of the deicing sleeve is an insulating layer, a conductive wire for heating is arranged in the internal cavity, and the two ends of the conductive wire are respectively connected to an external power supply; the deicing sleeve is evenly provided with a plurality of positioning wire clamps along the length direction of the deicing sleeve, and the positioning wire clamps stably connect the deicing sleeve and the contact line.

[0006] Preferably, the bottom surface of the de-icing sleeve is an arc-shaped surface structure that is cooperatively connected with the contact line, and the length of the de-icing sleeve is greater than the length of the contact line.

[0007] Preferably, the insulating layer is made of polyimide material, and a heat-conducting layer is provided in its inner layer, and the heat-conducting layer is made of stainless steel.

[0008] Further preferably, the conductive wire is a resistance wire, and is arranged in several layers along the length direction of the de-icing sleeve, and each layer of conductive wire meanders up and down in the same plane and is connected to adjacent layers.

[0009] Further preferably, the cavity of the deicing sleeve is also filled with crystalline magnesium oxide powder, and the conductive wire is immersed in the crystalline magnesium oxide powder.

[0010] Preferably, both ends of the conductive wire extend out of the deicing sleeve, and an insulating ceramic body is sleeved on the outer end, and the end is connected to an external power source through a terminal.

[0011] Preferably, the positioning wire clamp comprises a ring clamp plate and a ringless clamp plate fastened together by bolts, and a clamping groove is formed at the bottom of both clamp plates to cooperate with the outer side surface of the de-icing sleeve and clamped on both sides of the contact line.

[0012] Further preferably, a connecting hole is provided on the top of the ring clamp, and the ring clamp is fixedly connected to the positioner through the connecting hole.

[0013] Further preferably, a temperature monitor is also provided on one of the positioning wire clamps on each section of the de-icing sleeve, and the temperature monitor transmits signals to a control system of an external power supply via a wireless connection.

[0014] Further preferably, an infrared temperature sensor is provided in the housing of the temperature monitor and is fixedly connected to a gasket on the positioning wire clamp via a hanging ear on the housing.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) A multi-layer deicing sleeve is arranged on the upper surface of the contact wire along the length direction of the contact wire, and is heated by the internal conductive wire for heating. The conductive wire then transfers the heat to the contact wire to prevent the conductive wire from freezing, thereby playing the role of anti-icing and deicing for the entire contact network of the high-speed electric railway, solving the problem in the background technology that arcing occurs when the electric locomotive passes due to the freezing of the contact network, causing the locomotive to fail to operate;

[0017] (2) The insulating layer of the de-icing sleeve is made of thermally conductive polyimide, which can achieve insulation and good thermal conductivity. The stainless steel thermal conductive layer arranged inside the de-icing sleeve and the crystalline magnesium oxide powder filled in the thermal conductive layer are more conducive to improving the thermal conductivity efficiency. The conductive wire adopts a layered structure and is arranged in a circuitous manner up and down, which also increases the heating area of ​​the resistance wire and improves the heating efficiency;

[0018] (3) By installing a temperature monitor on the de-icing sleeve, it is beneficial to monitor and adjust the temperature of the de-icing sleeve in real time, and avoid safety accidents caused by excessive temperature. After it is put into operation, the operating department can timely grasp the heating situation and development trend of the conductor, improve economic benefits, and improve the safety operation and information management level of the line.

[0019] (4) The de-icing device has a simple structure, and the de-icing sleeve and the contact line are detachably installed by using a positioning wire clamp through a threaded connection. The installation method is convenient and practical. When in use, the de-icing sleeve is directly applied to the contact line. The modification cost is low and the de-icing efficiency is high. The de-icing process does not require manual labor and will not cause damage to the contact line. It is highly safe and can be widely promoted and used with good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described with reference to the accompanying drawings, in which:

[0021] Figure 1 This is a vertical cross-sectional view of the utility model after assembly;

[0022] Figure 2 It is a vertical cross-sectional view of the de-icing boot of the utility model;

[0023] Figure 3 This is a schematic diagram of the connection structure between the positioning wire clamp and the de-icing sleeve of the utility model;

[0024] Figure 4 It is a top view of the positioning wire clamp of the utility model;

[0025] Figure 5 It is a side view of the end of the de-icing boot of the utility model;

[0026] Figure 6 It is a front view of the infrared temperature sensor of the utility model;

[0027] Figure 7 It is a side view of the infrared temperature sensor of the utility model;

[0028] Figure 8 It is a vertical cross-sectional view of the contact wire of the utility model.

[0029] Figure numerals: de-icing sleeve 1, conductive wire 11, insulating layer 12, thermal conductive layer 13, crystalline magnesium oxide powder 14, contact wire 2, positioning wire clamp 3, ring clamp 31, connecting hole 311, ringless clamp 32, clamp groove 33, bolt 34, insulating ceramic body 4, terminal 41, temperature monitor 5, infrared temperature sensor 51, housing 52, hanging ear 53, gasket 54. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] Example 1: Figures 1 to 8A deicing device for a high-speed electric railway contact line is shown, comprising a deicing sleeve 1 arranged along the length direction of the contact line 2 and wrapped around the upper part of the contact line 2. The vertical section of the deicing sleeve 1 is a fan-shaped structure, wherein the deicing sleeve 1 only contacts the upper surface of the contact line 2, and the shape of its contact surface is an arc surface structure that matches the shape of the upper surface of the contact line 2, and the two are connected in a coordinated manner. The deicing sleeve 1 is a long strip-shaped closed structure as a whole, and its length is greater than the length of the contact line 2. The outermost layer is an insulating layer 12, and the insulating layer 12 can play an insulating role to ensure safety in use. An internal cavity is provided in the deicing sleeve 1, and a conductive wire 11 for heating is provided in the internal cavity. The two ends of the conductive wire 11 are respectively connected to an external power supply and input a 220V AC voltage. After the conductive wire 11 is energized, it generates heat and conducts it to the contact line 2 through the insulating layer 12. After the contact line 2 absorbs heat, it increases its own temperature and does not generate ice, thereby avoiding the problem of arcing when an electric locomotive passes by due to ice on the contact network in the background technology. The de-icing sleeve 1 is evenly provided with a plurality of positioning wire clamps 3 along its length direction. The positioning wire clamps 3 stably connect the de-icing sleeve 1 with the contact wire 2 and play a fixing role in installing the de-icing sleeve 1 on the contact network.

[0032] Embodiment 2: Based on Embodiment 1, the de-icing sleeve 1 is optimally designed as a whole. The conductive wire 11 is made of resistance wire. The conductive wire 11 is arranged in several layers along its length direction in the de-icing sleeve 1. Each layer of conductive wire 11 repeatedly meanders up and down in the same plane and is connected to the conductive wire 11 in the adjacent layer. The resistance wire is used for heating and conduction, and has a good heating effect. The layered structure of the conductive wire 11 and the arrangement of the meandering up and down also increase the heating area of ​​the resistance wire and improve the heating efficiency. The insulating layer 12 is made of polyimide material, and specifically AURUMJCL3030 polyimide can be selected, and the corresponding shape is processed by a mold. The insulating layer 12 is made of polyimide, which has the advantages of good insulation performance, high temperature resistance and good thermal conductivity, and has excellent insulation and thermal conductivity. The insulating layer 12 is fixed with a thermal conductive layer 13 in its inner layer. The thermal conductive layer 13 is made of stainless steel, which is conducive to fixation and heat conduction. The thermal conductive layer 13 strengthens heat conduction and improves thermal conductivity efficiency. Furthermore, the cavity of the de-icing sleeve 1 is also filled with crystalline magnesium oxide powder 14, which fills the entire cavity of the de-icing sleeve 1. The conductive wire 11 is immersed in the crystalline magnesium oxide powder 14 and is simultaneously wrapped by the heat conductive layer 13. Adding crystalline magnesium oxide powder is beneficial to transferring heat to the conductive wire 11, and is more beneficial to the heat conduction of the conductive wire 11, transferring more heat source to the contact wire 2, and is more beneficial to de-icing. The two ends of the conductive wire 11 pass through the two sides of the de-icing sleeve 1, respectively, as shown in FIG. Figure 5 As shown, the two ends outside the deicing sleeve 1 are also sleeved with insulating ceramic bodies 4, which insulate the two outer ends of the conductive wire 11 to ensure safety. The two outer ends of the conductive wire 11 are also connected to an external power source through terminal posts 41.

[0033] Embodiment 3: Based on Embodiment 1, the positioning wire clamp 3 is preferably designed. The positioning wire clamp 3 includes a ring clamp plate 31 and a ringless clamp plate 32 connected together. Figure 1 As shown, the bottom of the two is connected to form a clamping groove 33 that is clamped on the outer side of the de-icing sleeve 1 and connected with it, that is, the shape of the clamping groove 33 matches the outer side of the de-icing sleeve 1, and is clamped on the upper part of the contact line 2 on both sides, and the de-icing sleeve 1 is fixed between the positioning wire clamp 3 and the contact line 2. The ring clamp 31 and the ringless clamp 32 are fastened by bolts 34. The two sides of the upper part of the ring clamp 31 and the ringless clamp 32 are respectively provided with threaded holes. One end of the bolt 34 passes through the corresponding threaded hole and is fastened by a nut. The positioning wire clamp 3 stably clamps the de-icing sleeve 1 on the contact line 2, and adjusts the tightness of the connection by the bolt 34 to ensure the stability of the connection. The detachable installation method is adopted, which is convenient to use. The two ends of the bottom of the positioning wire clamp 3 are clamped on the upper part of the contact line 2 to ensure that the de-icing sleeve 1 is not easy to fall off during high-speed movement, and has good fixation.

[0034] Furthermore, a connection hole 311 is provided at the top of the ring clamp 31, and the ring clamp 31 is fixedly connected to the positioner through the connection hole 311. The positioner is used to fix the overall position of the contact wire 2 and stabilize the positioning wire clamp 3 to enhance its fastening effect.

[0035] Embodiment 4: Based on the embodiment 3, a preferred design is performed, and a temperature monitor 5 is also provided on one of the positioning wire clamps 3 on the deicing sleeve 1 of each section of the contact wire 2, which is conducive to temperature monitoring of each section of the deicing device and convenient for timely replacement and maintenance. The temperature monitor 5 transmits signals to the control system of the external power supply through a wireless connection, that is, the temperature monitor 5 transmits the monitored temperature signal to the control system of the external power supply through wireless transmission. The control system of the external power supply adjusts the current of the input conductive wire 11 in real time according to the monitored temperature, changes the temperature of the deicing sleeve 1, and keeps its temperature between 30-40°C. At the same time, it can provide timely feedback on the failure of the heating component of the deicing sleeve 1 to avoid safety accidents caused by excessive temperature. After being put into operation, the operating department can timely grasp the heating situation and development trend of the conductor, improve economic benefits, and improve the level of line safety operation and information management. The temperature monitor 5 is provided with an infrared temperature sensor 51. The temperature measurement principle of the infrared temperature sensor 51 is based on the infrared radiation energy of the object surface to measure its temperature. The infrared transmitter of the infrared temperature sensor 51 emits infrared light of a specific frequency to the de-icing sleeve 1. The temperature of the surface of the de-icing sleeve 1 will cause the object to emit infrared radiation, and its intensity is proportional to the temperature. After the infrared light is emitted to the surface of the de-icing sleeve 1, a part of it will be reflected back to the sensor. The infrared receiver in the sensor receives the reflected light and converts it into an electrical signal, which is then transmitted to the control system of the external power supply via wireless. Figures 7 and 8As shown, the infrared temperature sensor 51 is fixed in the housing 52 of the temperature monitor 5 , and the temperature monitor 5 is fixedly connected to the gasket 54 on the positioning wire clamp 3 through the hanging ear 53 on the housing 52 .

[0036] The above embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A deicing device for a high-speed electric railway contact line, characterized in that: The invention comprises a deicing sleeve (1) arranged along the length direction of a contact wire (2) and wrapped around the upper surface of the contact wire (2); the outermost layer of the deicing sleeve (1) is an insulating layer (12); a conductive wire (11) for heating is arranged in the internal cavity thereof; the two ends of the conductive wire (11) are respectively connected to an external power source; the deicing sleeve (1) is evenly provided with a plurality of positioning wire clamps (3) along the length direction thereof; the positioning wire clamps (3) stably connect the deicing sleeve (1) and the contact wire (2); the insulating layer (12) is made of a polyimide material.

2. A deicing device for high-speed electric railway contact wire according to claim 1, characterized in that: The bottom surface of the deicing sleeve (1) is an arc-shaped surface structure that is matched and connected with the contact line (2), and the length of the deicing sleeve (1) is greater than the length of the contact line (2).

3. A deicing device for high-speed electric railway contact wire according to claim 1, characterized in that: The inner layer of the insulating layer (12) is provided with a heat-conducting layer (13), and the heat-conducting layer (13) is made of stainless steel.

4. A deicing device for a high-speed electric railway contact line according to claim 1 or claim 3, characterized in that: The conductive wire (11) is a resistance wire, and is arranged in a plurality of layers along the length direction of the deicing sleeve (1). Each layer of conductive wire (11) meanders up and down in the same plane and is connected to adjacent layers.

5. A deicing device for high-speed electric railway contact wire according to claim 4, characterized in that: The cavity of the deicing sleeve (1) is also filled with crystallized magnesium oxide powder (14), and the conductive wire (11) is immersed in the crystallized magnesium oxide powder (14).

6. A deicing device for high-speed electric railway contact wire according to claim 1, characterized in that: Both ends of the conductive wire (11) extend out of the deicing sleeve (1), and an insulating ceramic body (4) is sleeved on the outer end, and the end is connected to an external power source through a terminal (41).

7. A deicing device for high-speed electric railway contact wire according to claim 1, characterized in that: The positioning wire clamp (3) comprises a ring clamp plate (31) and a ringless clamp plate (32) which are fastened together by bolts (34), and the bottoms of the two clamp plates form a clamp groove (33) which is matched with the outer side surface of the de-icing sleeve (1) and is clamped on both sides of the contact line (2).

8. A deicing device for high-speed electric railway contact wire according to claim 7, characterized in that: The top of the ring clamp plate (31) is provided with a connection hole (311), and the ring clamp plate (31) is fixedly connected to the positioner through the connection hole (311).

9. A deicing device for a high-speed electric railway contact line according to claim 7, characterized in that: A temperature monitor (5) is also provided on one of the positioning wire clamps (3) on each section of the de-icing sleeve (1), and the temperature monitor (5) transmits signals to a control system of an external power source via a wireless connection.

10. A deicing device for high-speed electric railway contact wire according to claim 9, characterized in that: An infrared temperature sensor (51) is arranged inside the housing (52) of the temperature monitor (5), and is fixedly connected to a gasket (54) on the positioning wire clamp (3) via a hanging ear (53) on the housing (52).

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